Coral reefs are found in the photic zone of aquatic biome.
Explanation:
The ridges of ocean that are formed by invertebrates of marine system which lives in the superficial warm water are the Coral reefs. These are found in the ocean zone- photic. This is the uppermost surface area of ocean where abundance of sunlight is found and photosynthesis takes place.
The reefs of shallow water have an association with algae, which is photosynthetic. One of such reefs is the Reef of Great Barrier in the Australian northeast coast.
Echinoderms are marine invertebrates. They include sea stars, sand dollars, and feather stars. They have a spiny endoskeleton.
Chordates include vertebrates and invertebrates that have a notochord.
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